815880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{523}}^1$

素因数の和:550

約数の個数: 64

約数和(自身を含む): 2640960

約数和(自身を除く): 1825080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 523, 780, 1046, 1560, 1569, 2092, 2615, 3138, 4184, 5230, 6276, 6799, 7845, 10460, 12552, 13598, 15690, 20397, 20920, 27196, 31380, 33995, 40794, 54392, 62760, 67990, 81588, 101985, 135980, 163176, 203970, 271960, 407940, 815880]

約数ペア:

[(1, 815880), (2, 407940), (3, 271960), (4, 203970), (5, 163176), (6, 135980), (8, 101985), (10, 81588), (12, 67990), (13, 62760), (15, 54392), (20, 40794), (24, 33995), (26, 31380), (30, 27196), (39, 20920), (40, 20397), (52, 15690), (60, 13598), (65, 12552), (78, 10460), (104, 7845), (120, 6799), (130, 6276), (156, 5230), (195, 4184), (260, 3138), (312, 2615), (390, 2092), (520, 1569), (523, 1560), (780, 1046)]